2003/11/13 by Igor Ozerov, Madjid Arab, V. I. Safarov +8
Materials Science · Physics and Astronomy · #Ga2O3 and related materials #Quantum Dots Synthesis And Properties #ZnO doping and properties #cond-mat.mtrl-sci
paper · pdf · doi:10.1016/j.apsusc.2003.11.038
published as Appl. Surf. Sci. 226 (2004) 242-248
arxiv created 2003/11/13 · openalex publication_date 2003/12/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Pulsed ArF laser annealing in air and in hydrogen atmosphere improves the optical properties of ZnO nanostructured films. Independently on the ambient atmosphere, laser annealing produces two major effects on the photoluminescence (PL) spectra: first, the efficiency of the exciton PL increases due to decrease of the number of non-radiative recombination centers; second, the intensity of the defect-related orange band decreases because of the removing of excessive oxygen trapped into the films during deposition. However, annealing in the ambient air also increases the intensity of the green band related to oxygen vacancies. We show that the combination of laser annealing and passivation of oxygen vacancies by hydrogen results in films free of defect-related emission and keeps intact their nanostructural character.